Budget rebuild items?

[Marky Dissod]

the 6.0L all had Cathedral heads?
or did they our some rec port on some of the trucks?

6.0L LQ4 had pope hat 373-873 heads, dished pistons, 9.4:1 scr (sell these heads unless you plan on forced aspiration)
6.0L LQ9 had pope hat 035-317 heads, flat pistons, 10.1 scr (sell these heads unless you plan on forced aspiration)
6.0L LS2 had pope hat 243-799 heads, flat pistons, 10.9:1 scr
6.0L LFA & LZ1 had pope hat 243-799 heads, valve-relieved pistons, and 10.7:1 scr.
All other aluminum 6.0L had rectangle 364-823 heads, flat pistons, 10.4:1 scr.
All other iron 6.0L had rectangle 364-823 heads, dished pistons, 9.6:1 scr.

 

[j91z28d1]

interesting..if you end up with a rec port engine, since they seem to like. dropping valve seats I'd definitely say have them checked out at the shop.
I kinda feel like the Cathedral port would be better for a truck power band?

I wonder if Pete knows of a link between 87 octane ratings and which head/cr or did all the 6.0 come rated to run cheap gas.


the hybrid 6.0 would probably be one that needs 93 with that compression. in the truck it was rated for 87 and that's all mine sees. I have never seen any knock or retard on the scanner even towing a car trailer, even thou next time I should probably run 93 went towing haha. but the cam bleeds off a lot of the static compression with very late intake valve closing. with a normal cam, that might be a bit much for 87. might be nice on 93 thou? oh they are aluminum block too.

 

[petethepug]

Choose the 6.0L motor that best suits your short & long term budget. The LFA & LZ1 are the aluminum AFM like the 5.3L that’s dead. No tune needed.

LFA 09-10 All Alum AFM
LZ1 11-13 All Alum AFM e85
LFA 07-10 Iron/Alum No AFM
L96 10-17 Iron/Alum e85 No AFM

Hahaha, you posted this right as I did. Pretty sure all above motors run regular fuel.

 

[j91z28d1]

I wish mine had e85. I'm sure it's in there if hp had defined the drop down. it's got 42lb injectors and all the alcohol tables are filled in. Just no way to enable it and the alcohol content in hpt scanner reports 0%.

but yes, if e85 is a options local to you, totally worth it.

 

[Marky Dissod]

I kinda feel like the Cathedral port would be better for a truck power band?

6.0L LS2 had pope hat 243-799 heads, flat pistons, 10.9:1 scr

LS2's powerband peaks @ 6000RpM, 400horse. Then GM put pope hats on the L33, every 5.3L after that, and the hybrid 6.0L V8s.

6.0L LFA & LZ1 had pope hat 243-799 heads, valve-relieved pistons, and 10.7:1 scr.

I can only wonder what the scr would be on a 6.2L with 243-799 heads ...

 

[j91z28d1]

the lfa and lz1 have a 3cc + piston. I know the compression math does increase with bore size. Quick Google looks like 6.2 is 0.065 bigger bore. I don't know without plugging it all in a calculator if 65 thousandth has more effect than +3 cc piston?

 

[Marky Dissod]

To be thorough, these are all the variables to consider:
Bore
Stroke
Chamber Volume
Piston Dome or Dish Volume
Deck Clearance
Gasket Thickness
Gasket Bore

 

[Charlie207]

just out of my own curiosity. the 6.0 all had Cathedral heads? or did they our some rec port on some of the trucks.

I was thinking all cathedral. but curious if it was done at some point?

LY6 6.0 had rectangular.

The one I'm looking at came out of a 2008 2500, so I'm hoping it's not too wallered-out. I think that's an LY6.

 

[Jonmurphy]

So, you have no experience? Unless you have a friend with experience, you may be spending extra “trial and error” resources on this project, i.e. special tools, incorrect parts, labor time. This is not your grandpas chainsaw. Not to mention a shop for all this fun to take place.

Excellent advice this guy is cruising for a bruising. Murphy's law

 

[j91z28d1]

Excellent advice this guy is cruising for a bruising. Murphy's law

honestly this is a horrible take. we should encourage guys to dig deeper into engines. not tell people they can't do it. this is literally the days of easy info and places like this to ask questions.

I am curious to hear what you think is so mind blowingly difficult about an ls engines that only a pro can touch one? read a little bit, watch some videos and it's fine. 16 year old kids are throwing these things together in their friends driveways, half in the dirt to go drifting. its about as easy as an engine gets.

there's guys that post here that end up rebuilding the entire top end of the engine over a sruck lifter in a parking garage of their apartment, up north in the winter. give people some credit.

I see this all the time.. mechanics think to highly of themselves when talking to others. you knew nothing at one time either. I know nothing about anything I've not researched yet either.. my fleet has almost gone completely electric. I knew nothing about it besides racing rc cars as a kid. picture tons of old guys refusing to work on them, to now 2 years later they are all experts and no one else knows anything.

it's ridiculous. but that's the mind set of gate keeping.